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Effectus [21]
3 years ago
10

A scientist plants two rows of corn for experimentation. She puts fertilizer on row 1 but does not put fertilizer on row 2. Both

rows receive the same amount of sun and water. She checks the growth of the corn over the course of five months.
Q9) What is the independent variable in this experiment? Why is this variable independent?


Q10) What is the dependent variable in this experiment? Why is this a dependent variable?

Q11) What variables are controlled in this experiment? Why are/is these/this variable control variable(s)?
Chemistry
2 answers:
IrinaVladis [17]3 years ago
5 0

Answer:

Q9. The independent variable in this experiment is the fertilizer. It is independent because she manipulating the variable to compare the growth.

Q10. The dependent variable in this experiment is the amount of growth of the corn. It is this because the growth depends on what the scientist did on the corn.

Q11. The variable controlled in this experiment is the amount of sun and water. These two variables never change so this is why it is the control.

Explanation:

QveST [7]3 years ago
5 0

Answer:

Explanation:

independent - 5 months dependent - sun controlled - water and the fertilizer

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Which is the correct SI system to use to measuring the mass of a boulder
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The correct SI system to use the measuring the mass of a boulder is Kilograms.

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Some water released 7800 J of energy when cooled from 78°C to 33°C. What was the mass of the water?
Karo-lina-s [1.5K]

Answer:

-41. 47

Explanation:

m = q / Cp x T

m = Mass

q = Energy (or joules)

Cp = Heat Capacity

T = Change in Temperature

Water's heat capacity is always 4.18.

This is the formula you'll need for change in temperature:

Final - Initial

So, 33 - 78 = -45

m = 7800 / 4.18 x -45

= -41.47

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If sock type A is pulled first, sock type B second, and sock type C third, the fourth sock type must match one of A, B, or C.
alexandr1967 [171]

Answer:

a

Explanation:

sock type a is first then other sock types

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Is meat a mixture or substance?
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A 23.98 gram sample of chromium is heated in the presence of excess iodine. a metal iodide is formed with a mass of 199.6 g. det
Misha Larkins [42]

The empirical formula of the metal iodide is Cr2I.

Mass of Chromium = 23.98

Molar Mass of Chromium = 51.9961

= 0.461 mol

Molar Mass of iodide = 126.9

= 199.6-23.88/126 = 1.394

The ratio between

Chromium and iodinei is1:2.So, the empirical formula is therefore Cr2I

Empirical formula of a chemical compound is the simplest whole number ratio of atoms present in a compound.[1] A simple example of this concept is that the empirical formula of sulfur monoxide, or SO, would simply be SO, as is the empirical formula of disulfur dioxide, S2O2. Thus, sulfur monoxide and disulfur dioxide, both compounds of sulfur and oxygen, have the same empirical formula. However, their molecular formulas, which express the number of atoms in each molecule of a chemical compound, are not the same.

Learn more about Empirical formula here:

brainly.com/question/14044066

#SPJ4

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1 year ago
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